Dough mixer



July 30, l929- F. x. LAUTERUR Er AL 1,722,475

DOUGH MIXER Filed June 30 1926 INVENTOR. 2' A A ATTORNEY.

Patented July 3o, 1929. LZZAJS narra arrestatie.

FRANK X. LAUTERBUR ANI) EDWARD J. L IIUrnan-un, or SIDNEY, OHIO.

neuen MIXER.

Application filed June 30, 1826. VSeria1 No. ll9,705.

Our invention relates to dough mixers, bend to the bowl walls, and forming a space and more particularly to the lids used therealong the top of the walls in which the profor. A jecting lateral edges of the lid are inserted,

In the past it has been proposed to form guided and held. v l 60 5 a lid for a dough mixer, which is curved to It will be evident that with such an arconform to the top of the mixer bowl, and rangement, no part of thelid can be hinged is held in fixed position when required, by so that it may be lifted up While the bowl is suitable standards so that the bowl can be in its vertical or operating position as shown rocked out from under the lid, thus exposing in the drawings. 65 the contents of the mixer. Thus, in order to permit the insertion of Our invention relates to lids of this genmaterials, we provide a top opening at 5 for eral type, and our improvements consist in introduction of flour and various ingredients, making the lids completely sealed to the top and a pipe opening at 6 for the introduction of the mixing bowl, when mixing is being of liquids. The two separate openings are 70 carried on, while by the provision of suitable needed, because the opening 5 will normally elements in the lid itself, the dough matebe held in position to receive material from rials and water can be-introduced into the a hopper, above the bowl, such as depends bowl, and the contents of the bowl can be from a fiour sifter. inspected at any time without rocking the The liclis held in position by means of a 75 bowl or lifting any part of the lid plate suitable engagement, indicated by the brackaway from the bowl. ets 6a, with the standards 7, 7, on which We accomplish our objects by that certain standards ,the bowl can swing, while the lid construction and arrangement of parts of is held in one position. which a single typical example will be de- In order to seal the front end of the lid, 80

scribed in detail, and those novel elements of the plate forming the inside front wall of which will be set forth in the appended the bowl is brought upwardly beyond the claims. I mouth of the bowl as at 8, so as to lie across In the drawings 2- the end of the bowl and form an abutment Figure l is a plan view of the device. for the lid plate. S5

Figure 2 is an end elevation thereof. In order to seal the back end, the plate Figure 3 is a front elevation thereof. forming the back wall of the bowl is bent Figure 4, showing the supporting standoutwardly as at 9, and the lid plate is ards, is a detail showing the lateral track for Vformed with a body which curves downthe lid. wardly as at 9a, so as to hcc-k behind the 90 Figure 5 is a detail showing the front wall inwardly bent portion 9. In Figure 6, the abutment. structure is obscured by the side wall of the Figure 6 is a detail of the rear wall intertrack forming angle iron at the top of the lock. bowl,l and is therefore, shown in dotted We have shown more or less diagramlines. The interlocking partsv9 and 9EL pref- 95 matically, the standards for the bowl, and v erably extend clear across the top edge of suitable portions thereof to which the lid the bowl and the lid. may be permanently secured in Figure 3. In order to permit View of the contents of The bowl l, is supported on centers 2, and is the bowl, an opening is formed near the ters. The tops of the side walls of the bowl nel plates 11 are secured to the lid running are curved, as indicated, on a curve which along-side of this hole. Covers or shutters is centered on the centers 2, so that the lid, .12, l2, engage between the lid plate and the which is formed of a plate 3, can be curved top flange of the pla-tes ll, which covers to conform to a like are, and can rest on the can be slid to a position of opening and clos- 105 bowl while it is being rocked on its centers. ing the hole 10. As so constructed, it will It is essential to our invention that the lid be evident that the bowl and lid are sealed be held down to the bowl along ythe sides clear along the sides and at the front and thereof, to provide a seal at this'point. As a back, when the bowl is in vertical position. simple method of accomplishing this, we To assure a proper registery without strain 110 '15 provide the top edges of the side walls with on the lid, an abutment, as vindicated in an angle iron 4f, conforming in its arc of Figure 2, is placed at 13 on the bowl which rocked by suitable mechanism on those cenfront of the lid indicated at l0, and chanengages a cross bar machine.

The bowl is set vertically when being filled through the hopper opening and pipe opening, subject to inspection through the sliding covers. lWhen the device is in operation, there is no place for the material to bey flung out, and leak over the sides of the structure. Inspection is still possible because of the sliding covers 'to the inspection hole.

There are no doubt other expedients by means of which the same mechanical function can be accomplished -as by those particular devices shown, and we wish to be entitled to the use of the doctrine of equivalents in the construct-ion of our claims that follow.

@laying thus described our invention what 14 on the frame of the n we claim as new and desire to secure by Letters Patent is l. In av dough mixer having a curved top, a lid curved to conform to the top, and normally held in fixed position while the bowl may rock beneath it,fianges arranged alone` the top edges of the side walls of the bowl, between which flanges and the walls of the bowl the lid is slidingly held, an abutment on the bowl at the front for en with the lid when the bowl is in position directly beneath the lid, and an abutment on the lid to engage the bowl along the back upper edge thereof7 when the bowl is in said position, said abutment last noted, being; formed as a hook portion extending` across the back edge of Vthe lid, and said bowl havinga laterally extending` flange to be engaged by said hook portion.

2. In a dough mixer having,` a curved top, a lip curved to conform to the top, and normally held in fixed position while 'the bowl may rock beneath it, flanges arranged along the top edges of the side walls of the bowl,

between which flanges and the walls of the bowl the lid is slidingly held, an abutment on the bowl at the 'liront for engagement with the lid when the bowl is position directly beneath the lid7 and an abutment on the lid to engage the bowl along the back upper edge thereof, when the bowl is in said position, said abutment last noted beine` terrified as a hook portion' extending` across the back edge of the lid, and said bowl having; a laterally extending flange to be enffaged by said hook portion, and an auxiliary stop for determiningthe operating position of the bowl.-

ln a dough mixer vhavingl a rocking bowl with a curved top, and a fixedly mounted lid contoured to fit the curve of the top, means for limitingv the movement of the bowl from tilted position to operating position, comprising the combination of a front abutment extending,- upwardly from the bowl adapted to engage the cover and a rear interlock comprising a hooked portion extendina' downwardly from the cover, with a flanged portion extending outwardly from the bowl adapted to engage the hooked portion.

il. In a dough mixer having a rocking` bowl with a curved top, and a fixedly mounted lid contoured to lit the curve of the top, means for controlling the movement of the bowl from tilted position to opera-ting position, comprising` the combination or" a front abutment extending upwardly from the bowl adapted to engage the cover and a rear in- 'terlock comprising a hooked portion extending downwardly from the cover, with a ranged portion extending; outwardly from the bowl adapted to engage the hooked portion, and a hooked shaped arm carried by the bowl adapted to engage a blocking rod.

FRAN K X. LAUTERBUR. Y EDWARD J. LAUTERBUR. 

